Le Docteur Yuna Kim, de l'Institut de Recherche en Sciences Électroniques, Université de Hokkaido au Japon, donnera un séminaire intitulé "Photoresponsive smart molecular systems with amplified functions" le Mercredi 13 Février 2019 à 10h00 en salle de conférences à XLIM.

Résumé: Realization of a smart molecular system which can execute programmable and amplified functions in response to external stimuli has been one of the grand challenges in the field of artificial molecular machines. In this talk, our attempts utilizing efficient transfer and amplification of intra- and/or intermolecular interactions to deliver meaningful functions such as autonomous mechanical work, imaging, sensing and patterning will be introduced. Chiral liquid crystals based on photoisomerizable dopants accompanying large superstructural helical reorganization resulted in phototunable optical and dynamic mechanical functions. Meanwhile, photopolymerizable diacetylenes exhibiting a transition of crystalline orientation from light-inert to light-active state upon mechanical force were developed. This unique mechano- and photo-responsive system can provide novel imprinting patterning method where no mechanical deformation of resist but phase transition is induced by the mold.

Contact XLIM : Sylvain Vedraine